From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932433AbWG3S4y (ORCPT ); Sun, 30 Jul 2006 14:56:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932434AbWG3S4y (ORCPT ); Sun, 30 Jul 2006 14:56:54 -0400 Received: from smtp5-g19.free.fr ([212.27.42.35]:58051 "EHLO smtp5-g19.free.fr") by vger.kernel.org with ESMTP id S932433AbWG3S4y (ORCPT ); Sun, 30 Jul 2006 14:56:54 -0400 Message-ID: <44CD0115.4010608@free.fr> Date: Sun, 30 Jul 2006 20:57:25 +0200 From: Laurent Riffard User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.8.0.4) Gecko/20060405 SeaMonkey/1.0.2 MIME-Version: 1.0 To: Kernel development list , reiserfs-list@namesys.com Subject: reiser4-2.6.18-rc2-mm1: possible circular locking dependency detected in txn_end X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org ======================================================= [ INFO: possible circular locking dependency detected ] ------------------------------------------------------- mv/29012 is trying to acquire lock: (&txnh->hlock){--..}, at: [] txn_end+0x191/0x368 [reiser4] but task is already holding lock: (&atom->alock){--..}, at: [] txnh_get_atom+0xf6/0x39e [reiser4] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&atom->alock){--..}: [] lock_acquire+0x60/0x80 [] _spin_lock+0x19/0x28 [] try_capture+0x7cf/0x1cd7 [reiser4] [] longterm_lock_znode+0x427/0x84f [reiser4] [] coord_by_handle+0x2be/0x7f7 [reiser4] [] coord_by_key+0x1e3/0x22d [reiser4] [] insert_by_key+0x8f/0xe0 [reiser4] [] write_sd_by_inode_common+0x361/0x61a [reiser4] [] create_object_common+0xf1/0xf6 [reiser4] [] create_vfs_object+0x51d/0x732 [reiser4] [] mkdir_common+0x43/0x4b [reiser4] [] vfs_mkdir+0x5a/0x9d [] sys_mkdirat+0x88/0xc0 [] sys_mkdir+0x10/0x12 [] sysenter_past_esp+0x56/0x8d -> #0 (&txnh->hlock){--..}: [] lock_acquire+0x60/0x80 [] _spin_lock+0x19/0x28 [] txn_end+0x191/0x368 [reiser4] [] reiser4_exit_context+0x1c2/0x571 [reiser4] [] create_vfs_object+0x6ef/0x732 [reiser4] [] mkdir_common+0x43/0x4b [reiser4] [] vfs_mkdir+0x5a/0x9d [] sys_mkdirat+0x88/0xc0 [] sys_mkdir+0x10/0x12 [] sysenter_past_esp+0x56/0x8d other info that might help us debug this: 2 locks held by mv/29012: #0: (&inode->i_mutex/1){--..}, at: [] lookup_create+0x1d/0x73 #1: (&atom->alock){--..}, at: [] txnh_get_atom+0xf6/0x39e [reiser4] stack backtrace: [] show_trace+0xd/0x10 [] dump_stack+0x19/0x1d [] print_circular_bug_tail+0x59/0x64 [] __lock_acquire+0x814/0x9a5 [] lock_acquire+0x60/0x80 [] _spin_lock+0x19/0x28 [] txn_end+0x191/0x368 [reiser4] [] reiser4_exit_context+0x1c2/0x571 [reiser4] [] create_vfs_object+0x6ef/0x732 [reiser4] [] mkdir_common+0x43/0x4b [reiser4] [] vfs_mkdir+0x5a/0x9d [] sys_mkdirat+0x88/0xc0 [] sys_mkdir+0x10/0x12 [] sysenter_past_esp+0x56/0x8d (Linux antares.localdomain 2.6.18-rc2-mm1 #77 Sun Jul 30 15:09:34 CEST 2006 i686 AMD Athlon(TM) XP 1600+ unknown GNU/Linux) -- laurent